tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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head-let-destructuring.js (805B)

      1 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-iteration-statements
      5 es6id: 13.7
      6 description: >
      7  The token sequence `let [`is interpreted as the beginning of a destructuring
      8  binding pattern
      9 info: |
     10  Syntax
     11 
     12  IterationStatement[Yield, Return]:
     13 
     14    for ( [lookahead ∉ { let [ } ] LeftHandSideExpression[?Yield] in
     15      Expression[+In, ?Yield] ) Statement[?Yield, ?Return]
     16 
     17    for ( ForDeclaration[?Yield] in Expression[+In, ?Yield] )
     18      Statement[?Yield, ?Return]
     19 ---*/
     20 
     21 var obj = Object.create(null);
     22 var value;
     23 
     24 obj.key = 1;
     25 
     26 for ( let[x] in obj ) {
     27  value = x;
     28 }
     29 
     30 assert.sameValue(typeof x, 'undefined', 'binding is block-scoped');
     31 assert.sameValue(value, 'k');
     32 
     33 reportCompare(0, 0);